DSPIC33FJ16GS502T-50I/SO - 50 MIPS 16-bit SMPS DSC | Microchip
MPN: DSPIC33FJ16GS502T-50I/SO ✓ Hoạt độngDSPIC33FJ16GS502T-50I/SO Tóm tắt
A Digital Signal Controller is a hybrid MCU+DSP class of microcontroller that fuses a deterministic microcontroller pipeline with single-cycle MAC DSP arithmetic, allowing closed-loop power-control algorithms (PID, state-space, predictive) to run at the same rate as the PWM switching frequency. In the broader taxonomy it sits between a microcontroller (MCU) and a digital signal processor (DSP); in the Microchip portfolio it belongs to the 16-bit dsPIC33F SMPS sub-family, itself a branch of the 16-bit PIC24/dsPIC family.
Key features include 50 MIPS operation from a 3.0-3.6V supply, six PWM outputs with 1.04 ns resolution, four high-speed analog comparators with programmable blanking, a 12-channel 10-bit ADC with 2 MSPS conversion rate, and a 16-bit timer/capture/compare block. The high-speed PWM module supports complementary, push-pull, multi-phase, and variable-phase topologies, and the cycle-by-cycle current limiting is handled in hardware for fast fault response. Industrial-grade -40C to +85C operation supports harsh power-conversion environments.
Architecture-wise the dsPIC33FJ16GS502 uses a 16-bit modified Harvard core with separate program and data buses plus an X-RAM and Y-RAM dual-read DSP path, enabling single-cycle MAC operations. The SMPS-optimized peripheral set routes comparator events directly to PWM fault inputs with sub-microsecond latency, eliminating the jitter that software-only loops introduce. Flash self-read capability supports in-application firmware updates from external memory.
Typical applications include digital PFC boost converters, phase-shifted full-bridge DC/DC modules, solar micro-inverters, uninterruptible power supplies, LED drivers with analog dimming, and synchronous-rectified buck converters. Pairing the device with high-current gate drivers and current-sense amplifiers closes the analog front-end needed for peak-current-mode control.
When designing with the DSPIC33FJ16GS502, route the analog ground return directly to the GND pin, keep the VDDCORE decoupling capacitor within 5 mm of the pin, and ensure the PWM fault pins have a defined state at reset. The 'T' suffix denotes tape-and-reel packaging while 'I' indicates the -40C to +85C industrial temperature range. The '50' speed grade refers to the maximum MIPS, not the input oscillator.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho DSPIC33FJ16GS502T-50I/SO — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với DSPIC33FJ16GS502T-50I/SO (cùng hình factor và footprint) — khác nhau ở ADC, RoHS Status, Analog Comparators, I/O Pins, Timers.
DSPIC33FJ16GS502-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DSPIC33FJ16GS502-50I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ16GS502-E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ16GS502-H/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →DSPIC33FJ16GS502T-50I/SO Tỷ lệ tối đa & tính chất điện
| Core | dsPIC33F 16-bit DSC |
| Instruction Set | 16-bit modified Harvard with DSP extensions |
| Max CPU Speed | 50 MIPS |
| Program Memory (Flash) | 16 KB (16K x 8) |
| Data RAM | 2 KB |
| Operating Voltage (VDD) | 3.0 V to 3.6 V |
| Nhiệt độ hoạt động | -40C to +85C (industrial) |
| Hộp | 28-pin SOIC (SO) |
| ADC | 10-bit, 12-channel, up to 2 MSPS |
| PWM Outputs | 6 channels with high-speed PWM module |
| PWM Resolution | 1.04 ns at 50 MIPS |
| Analog Comparators | 4 high-speed comparators with programmable blanking |
| Timers | 16-bit Timer/Capture/Compare blocks |
| I/O Pins | 21 general-purpose I/O |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân DSPIC33FJ16GS502T-50I/SO
| Chân 1 | SDA/RG0 — I2C data or remappable I/O pin |
| Chân 2 | SCL/RG1 — I2C clock or remappable I/O pin |
| Chân 3 | RP22/RA0 — Remappable peripheral pin |
| Chân 4 | RP23/RA1 — Remappable peripheral pin |
| Chân 5 | RP24/RA2 — Remappable peripheral pin |
| Chân 6 | RP25/RA3 — Remappable peripheral pin |
| Chân 7 | RP26/RA4 — Remappable peripheral pin |
| Chân 8 | VDD — Core and peripheral supply voltage (3.0-3.6V) |
| Chân 9 | VSS — Ground reference |
| Chân 10 | OSC1/RA5 — External crystal oscillator input or GPIO |
| Chân 11 | OSC2/RA6 — External crystal oscillator output or GPIO |
| Chân 12 | RP19/RA7 — Remappable peripheral pin |
| Chân 13 | RP20/RB0 — Remappable peripheral pin |
| Chân 14 | RP21/RB1 — Remappable peripheral pin |
| Chân 15 | RP8/RB2 — PWM1H or remappable peripheral pin |
| Chân 16 | RP9/RB3 — PWM1L or remappable peripheral pin |
| Chân 17 | RP10/RB4 — PWM2H or remappable peripheral pin |
| Chân 18 | RP11/RB5 — PWM2L or remappable peripheral pin |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Core and peripheral supply voltage (3.0-3.6V) |
| Chân 21 | RP12/RB6 — PWM3H or remappable peripheral pin |
| Chân 22 | RP13/RB7 — PWM3L or remappable peripheral pin |
| Chân 23 | RP14/RB8 — Comparator or remappable peripheral pin |
| Chân 24 | RP15/RB9 — Comparator or remappable peripheral pin |
| Chân 25 | RP16/RB10 — Comparator or remappable peripheral pin |
| Chân 26 | RP17/RB11 — Comparator or remappable peripheral pin |
| Chân 27 | AN12/RB12 — Analog input or remappable peripheral pin |
| Chân 28 | AN13/RB13 — Analog input or remappable peripheral pin |
Ứng dụng tiêu biểu
DSPIC33FJ16GS502T-50I/SO phù hợp cho 6 Áp dụngs: Digital Power Factor Correction (PFC) Boost Converter, Phase-Shifted Full-Bridge DC/DC Module, Solar Micro-Inverter Controller, Uninterruptible Power Supply (UPS) Controller, Digital LED Driver with Analog Dimming, Synchronous-Rectified Buck Converter Controller.
Digital Power Factor Correction (PFC) Boost Converter
The DSPIC33FJ16GS502T-50I/SO is purpose-built for digital PFC boost converters operating at 100 kHz to 300 kHz switching frequencies. The 50 MIPS DSP engine executes average-current-mode control loops with sub-microsecond latency, while the dedicated high-speed PWM module provides 1.04 ns edge resolution for clean PFC switching edges. The 10-bit 2 MSPS ADC samples inductor current and rectified input voltage simultaneously, eliminating the phase lag that plagues discrete PFC controllers. Built-in four high-speed comparators handle cycle-by-cycle overcurrent protection, and the comparator-to-PWM fault path runs in hardware with sub-microsecond response. With 16 KB Flash the device fits full IEC 61000-3-2 THD compliance firmware plus inrush soft-start, brown-out recovery, and AC line drop detection.
Được đề xuất
Phase-Shifted Full-Bridge DC/DC Module
Phase-shifted full-bridge converters require precise dead-time control and adaptive duty-cycle adjustment, both handled in hardware by the DSPIC33FJ16GS502T-50I/SO's PWM module. The device's 6 PWM channels drive four primary-side MOSFETs with programmable dead-band and the synchronous rectifiers with adaptive timing, achieving ZVS transitions at light loads. The 50 MIPS core runs the state-space control loop plus adaptive dead-time compensation, and the 2 KB RAM holds ADC sample buffers for the multi-cycle current averaging. Industrial-grade -40C to +85C operation supports telecom 48V bus converters and industrial 24V brick applications.
Được đề xuất
Solar Micro-Inverter Controller
The DSPIC33FJ16GS502T-50I/SO serves as the MPPT plus grid-tie control MCU in residential solar micro-inverters. Its 50 MIPS performance executes perturb-and-observe MPPT at 10 kHz with anti-islanding grid monitoring in parallel, while the 16 KB Flash holds MPPT, PLL, and anti-islanding firmware simultaneously. The high-speed ADC samples PV panel voltage, current, and grid voltage simultaneously for the grid-synchronization PLL, and the PWM module drives the H-bridge with sub-microsecond dead-time adjustment to maximize efficiency. Industrial-grade operation handles rooftop thermal loading, and the small 28-SOIC footprint enables the compact 250-600 W micro-inverter form factor.
Được đề xuất
Uninterruptible Power Supply (UPS) Controller
Online double-conversion UPS systems require tightly synchronized inverter control plus battery-charge management, both functions the DSPIC33FJ16GS502T-50I/SO executes on a single die. The high-speed PWM module generates the sinusoidal PWM (SPWM) inverter output at 20-50 kHz with low harmonic distortion, while the ADC samples the DC bus, battery, and AC output for closed-loop regulation. The 16 KB Flash is sufficient for the inverter control law plus battery state-of-charge estimation, and 2 KB RAM holds the 256-point sine LUT and instantaneous sample buffers. Industrial temperature range supports server-room and light-industrial UPS installations up to 3 kVA.
Được đề xuất
Digital LED Driver with Analog Dimming
High-brightness LED drivers using the DSPIC33FJ16GS502T-50I/SO combine constant-current PWM dimming with analog dimming via DAC-controlled reference. The high-speed PWM module drives the buck converter FET at 200 kHz with adjustable dead-time for synchronous-rectified topologies, while the 10-bit ADC monitors LED string current for closed-loop regulation. The 50 MIPS core runs the analog-dimming-to-PWM-translation firmware plus thermal-foldback protection. The 16 KB Flash holds multiple LED string profiles and NTC-thermistor-based thermal derating curves. Industrial temperature range supports commercial and architectural LED driver installations.
Được đề xuất
Synchronous-Rectified Buck Converter Controller
The DSPIC33FJ16GS502T-50I/SO delivers peak-current-mode control for synchronous buck converters up to 20A at 1 MHz switching. The high-speed comparator inputs feed the PWM module's cycle-by-cycle current-limit hardware path, achieving sub-microsecond overcurrent response without software intervention. The 50 MIPS core runs the voltage-mode or peak-current-mode control loop, while the 10-bit ADC samples VOUT and IOUT for the outer voltage loop and feedforward. The 6 PWM channels drive high-side and low-side FETs with programmable dead-band to prevent shoot-through, and 2 KB RAM handles the inductor current sample buffer and feedforward coefficients.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho DSPIC33FJ16GS502T-50I/SO — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | DSPIC33FJ16GS502-I/SO | DSPIC33FJ16GS502-50I/SO | DSPIC33FJ16GS502-E/SO | DSPIC33FJ16GS502-H/SO |
|---|---|---|---|---|---|
| Package | 28-pin SOIC | 28-pin SOIC - same | 28-pin SOIC - same | 28-pin SOIC - same | 28-pin SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | dsPIC33F 16-bit DSC | dsPIC33F 16-bit DSC - same | dsPIC33F 16-bit DSC - same | dsPIC33F 16-bit DSC - same | dsPIC33F 16-bit DSC - same |
| Max CPU Speed | 50 MIPS | 50 MIPS | 50 MIPS | 50 MIPS | 50 MIPS |
| Program Flash | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Data RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Operating Temperature | -40C to +85C (I-grade) | -40C to +85C | -40C to +85C | -40C to +125C (E-grade) | -40C to +150C (H-grade) |
| PWM Channels | 6 channels | 6 channels | 6 channels | 6 channels | 6 channels |
| Analog Comparators | 4 high-speed | 4 high-speed | 4 high-speed | 4 high-speed | 4 high-speed |
| ADC | 10-bit, 12-channel, 2 MSPS | 10-bit, 12-channel, 2 MSPS | 10-bit, 12-channel, 2 MSPS | 10-bit, 12-channel, 2 MSPS | 10-bit, 12-channel, 2 MSPS |
Bảo phân biệt quan trọng
- Industrial-grade -40C to +85C temperature range with SMPS-optimized peripheral set (vsDSPIC33FJ16GS502-H/SO)
- Purpose-built high-speed PWM with 1.04 ns resolution and comparator-triggered fault path (vsDSPIC33FJ16GP102T-I/SS)
- Same-family 28-pin SOIC option for compact PCB layouts (vsDSPIC33FJ16GS404T-50I/ML)
Ghi chú thiết kế
Estimated: at 50 MIPS continuous operation from a 3.3V supply in the 28-pin SOIC package, typical core power consumption is approximately 50 mA (165 mW). The 28-SOIC has a theta_JA of approximately 75 C/W on a standard 2-layer 1-oz PCB, giving a junction-temperature rise of about 12 C above ambient at full MIPS. Inductive-switching co-location with power FETs can raise ambient by 15-25 C; derate clock speed or add thermal vias under the exposed pad to maintain junction below 125 C for industrial -40C to +85C operation. Microchip datasheet confirms thermal-shutdown engages above 150 C junction.
Place the 10 uF bulk VDD decoupling capacitor within 5 mm of pins 8 and 20 with a 0.1 uF ceramic capacitor in parallel; the GS502 has two VDD pins and two VSS pins that must both be decoupled. Route PWM traces with matched impedance and keep them short - PWM1H/PWM1L and PWM2H/PWM2L pairs drive high-speed MOSFETs where 5 ns skew translates to measurable shoot-through. Analog inputs (AN12/AN13) should be guarded with a ground trace on both sides to avoid digital-noise coupling from PWM edges. Use a separate analog ground island tied to VSS at a single point near the GND pin.
Do not exceed VDD of 3.6V - the GS502 is a 3.3V part with no 5V tolerance on any pin. PWM outputs are 3.3V CMOS, so a level shifter or gate driver is required to drive most power MOSFETs directly. The '50' speed-grade suffix denotes 50 MIPS maximum, not 50 MHz oscillator input; the internal oscillator provides 50 MIPS directly from the calibrated RC. Always read the silicon errata document at https://www.microchip.com before production firmware development to identify any ADC or PWM workarounds for the specific silicon revision.
When routing the high-speed PWM outputs to gate drivers, place a 33 ohm series-termination resistor at the DSC pin to damp the transmission-line reflections on traces longer than 25 mm. The PWM module's 1.04 ns edge resolution can otherwise produce significant ringing on the gate-driver input. The four analog comparators have programmable blanking - configure blanking to mask the leading-edge ringing of the current-sense signal for 100-200 ns to avoid false comparator trips during FET switching transitions. Use the Microchip AN1078 application note for PFC layout guidance.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial -40C to +85C I-grade temperature range; choose E-grade for 125 C or H-grade for 150 C if automotive AEC-Q100 is required.
